Pump



Sept. 14 1926,

A. H. HILL ET AL.

PUMP

Filed July 15. 1924 3 Sheets-Sheet 1 Sew-t l4 197263. 1,599,889

H. HELL ET AL PUMP Filed July 15, 1924 3. Sheets-Sheet 2 Sept. 14 1926. 1,55%,889

A. H. HELL ET AL.

PUMP

Filed-July 15, 1924 SSheetS-Sheet 3 Patented Sept. 14, 1926 UNITED STATES 1,599,889- PATENT OFFICE.

ALBERT H. HILL AND EARL H. SLEETI-I, 0F ARKANSAS CITY, KANSAS.

PUMP.

Application filed July 15,

This invention relates to improvements in pumps, particularly adapted for pumping sludge acids and the like.

. An important object of the invention is to provide a pump which is capable of forcing sludge acids and like matter through a pipe line without becoming obstructed or otherwise disarranged due to the resistance of the matter being transmitted.

A still further object of the invention is to provide a pump of this character which may be readily secured within the ordinary pipe line and produce a steady flow of the matter through the line without danger of clogging.

A still further object of the invention is to provide a pump of this character Which is especially adapted for pumping comparatively thick liquid matter and employing a plurality of valves therein to prevent any back pressure.

A still further object of the invention is to provide a pump of this character which is comparatively simple in construction, yet durable and efficient for the purpose intended.

Other objects and advantages of this invention will be apparent during the course of the following description.

In the accompanying drawings, forming a part of this specification and in which like numerals are employed to designate like parts throughout the same:

Figure 1 is a plan view of the device embodying my invention,

Figure 2 is a longitudinal sectional view taken on the line 22 of Figure 1,

Figure 3 is an end elevation of the device, and

Figure 4 is a transverse section taken on the line 44 of Figure 1.

In the drawings, wherein for the purpose of illustration is shown the preferred embodiment of our invention, the numeral 10 generally denotes the crank end body section comprising a piston casing the rear extremity being rectangular in form as shown at 11 and provided with side plates 12 secured thereto by bolts 13 or the like. The front portion of the section 10 is cylindrical and is provided at the extremity with external threads 1 1 adapted to engage suitable threads formed within a stuiflng box flange 15. The flange 15 is circular and provided with a plurality of openings the purpose of Which will be hereinafter described, a simi- 1924. Serial No. 726,098.

lar flange 16 is formed upon the opposite extremity of the section and adapted to connect the same with a suitable pipe section or container. The lower portion of the section is provided with a pair of opposed longitudinal supporting brackets 17 formed upon the section and secured thereto, extension flanges 18 being formed on the lower extremities provided with vertical bolt holes 19 enabling the device to be secured to a suitable base or support.

Mounted upon the upper side of the square casing section are a pair of bearing blocks 20 secured to the casing and having journaled therein a transverse drive shaft 21. The shaft 21 is suitably ournaled within the bearing blocks and prevented from displacement by a pair of bearing caps 22 mounted on the bearing blocks and snugly fitting the shaft. In order to prevent axial movement of the shaft a pair of collars 23 are formed thereon and positioned against the outer sides of the bearing blocks thus forming a solid bearing structure.

Secured to the central portion of the shaft 21' between the bearing blocks 22 is a guide pulley 24: keyed or otherwise fastened to the shaft and adapted to rotate the same. This pulley is to be back driven from the source of power which may be an electric motor,

gasoline engine or the like.

A pair of toothed driving pinions 25 are secured to the transverse shaft adjacent the bearing blocks, the pinions being driven by the shaft and meshing with a pair of comparatively large toothed gears 26, supported by a pair of stub shafts mounted in the sides of the section 10, and driven by the pinion 25. A suitable fly wheel 27 is keyed to one extremity of the transverse shaft 21 and rotates therewith.

The large toothed gears 26 are of the usual construction comprising a comparatively wide peripheral ring 26 upon which the teeth are formed, the ring being supported by a 'disk 26 constructed about the hub. One segment of the gear 26 is formed of the solid construction the same width as the ring 26 and is provided with three internally threaded openings 28 for the reception of crank jins 29. The crank pins are provided with externally threaded extremities one of which engages the threaded openings 28 and the other receives a retaining nut 30. .The intermediate portions of the crank pins are properly machined to form a bearing surface adapted to carry one of the extremities of a pair of connecting rods 31, the crank ends of which are provided with suitable bearing sleeves and positioned upon the crank pins 29 and prevented from displacement by the nuts 30, the other extremities of the rods being offset inwardly and provided with bearings similar to that at the crank ends.

A head end casing section generally denoted by the numeral 32 is positioned a substantial distance in front of the section 10 and comprises a cylinder having a flange 34 formed on the forward extremity thereof, this flange being provided with a plurality of bolt holes 35 permitting the connection of a pipe section or container. The rear extremity of the cylinder 33 is externally threaded as at adapted to engage similar threads formed in the packing flange 8'7. This entire section is supported on brackets similar to those employed upon the rear or crank end section 10.

The longitudinal bores formed through the sections 10 and 32 are provided with tubular liners 38 secured therein in any suitable manner to form a tight fitting wall about a hollow piston 39 adapted to reciprocate therein. The extremities of the piston 39 are provided with grooves formed upon the outer periphery for the purpose of re ceiving piston lings 40, three of these rings being preferably mounted in the front or crank end of the piston and two in the rear or head end. The rear end of the piston 39 is preferably provided with a conical bore as shown at 41 to enable same to readily force the matter, being transmitted therethrough, into the body of the cylinder. The front end of the piston has a hinge member 42 secured to the upper extremity for the purpose of supporting a substantially circular gate 43 hingedly connected to the member 42 by a longitudinal pin. A similar gate construction is mounted within the forward extremity of the section 32 and comprises a retaining ring 44 secured within the bore of the section, the inner side thereof being formed at an angular elevation and hingedly supporting a gate as described for the piston gate. As it is desirable to also provide closing means for the forward section 10 a ring 45 is mounted near the front extremity thereof, the opening formed therein being substantially conical to permit the passage of the matter being forced through the pump, the outer edge hingedly supporting one of the check gates 43.

In order to connect the forward extremities of the connecting rod 31 with the movable piston 39 we provide a pair of semi-circular straps 46 having formed upon the upper and lower extremities extension flanges 47 provided with transverse holes for con uection of the hands by bolts and nuts. The two semi-circular band sections 46 are positioned within a suitable groove formed about the central portion of the piston 39 and have extension bosses 48 formed upon their outer opposed sides and provided with internally threaded recesses therein. A pair of connecting rod pins 49 are threadedly mounted within the said recesses formed within the bosses 4S and connect with the bearings formed upon the forward extensions of the connecting rods, the rods being secured upon the pins by means of the nuts 50.

In order to prevent leakage of matter about the reciprocating piston we consider it desirableto provide a pair of packing rings 51 which are positioned in V-shape l rooves formed between the extremities of the cylinder sections and the packing flanges. As it is also desirable to connect the two cylindrical sections to form a rigid structure we provide a plurality, in this instance four, longitudinal bracing rods 52 positioned through suitable openings formed in the packing flanges and secured by nuts 53 mounted on the extremities thereof.

In operation the forward end of the 'device is connected to a pipe line leading from, or directly to a vat or container in which the sludge acids or other matter to be transmitted, is deposited, To the flange on the rear section a series of pipes of other conducting means are connected preferably by means of stud bolts to avoid the flanges formed upon the sides of the rear section. The pump is driven by a belt positioned about the pulley 24 and driving pulley, causing rotation of the shaft 21 and drive gears. The connecting rods secured to the gears 26 and piston straps will impart reciprocating movement to the piston. As the acid flows through the front section it automatically raises the gate 43 until the action of the piston traveling in that direction forces the acid against the ring 44, the gate 43 being closed by the force of the piston and the acid r liquid matter being forced through the longitudinal bore of the piston, until the gate formed on the rear portion of the piston is raised by the. force of the liquid and causes the same to be forced continuously therethrough. On the return stroke of the piston the gate 43 mounted on the rear extremity of the same will naturally force the acid through the rear section and rear gate member thus providing a steady movement of the acid through the pump and pipe line. The particular size of pump required would be regulated by the amount of acid it is desired to transmit in a given time the structure being substantially the same for the different size pump constructed, the con struction naturally varying slightly in pro portion as the amount of work required by the pump may demand.

The valve port through the support 44 has its center in alignment with the center of the port through the valve support 45. The passageway through the tube 39 is reduced at the beveled end thereof and the said reduced end of the passageway through the tube has its center aligned horizontally with the center of the opening in the port in both of the valve supports. Also, these valve ports are surrounded by inclined surfaces which form valve seats and against which the swinging valves may bear. The lower surface of the internally reduced end of the tube 39 is in horizontal alignment with the lower surface of the passageway through the said tube at the intermediate portion thereof, as best shown in Figure 2 of the drawing. By reason of this structural arrangement the pump is especially adapted to be used for moving sticky or coarse material as for instance acid sludgewhich is made up of liquid and a predominant amount of solid matter held in suspension by the liquid and partially in suspension. The valves hang normally in an inclined position and the material is not forced around sharp corners or sharp angles. As the sludge passes through the tube 39 the solid material will have a tendency to settle toward the lower surface of the passageway through the tube. As this passageway is straight from the intermediate portion of the tube through the outlet port thereof, the solid material may move smoothly through the tube and along the bottom of the passageway. As the solid matter settles toward the lower side of the passageway the liquid remains at the upper portion of the passageway and while some of the liquid is expelled from the tube with the solid material a major portion of the liquid will be retained in the tube while the solid material is expelled from the tube at the lower portion of the outlet ports. Therefore the arrangement is such that in a general way the solid material is kept moving along the lower portion of the passageway through the tube while the liquid is partially retained in the tube by reason of the reduction in the diameter of the outletport and this liquid serves to lubricate or soften the sludge which is taken into the tube upon the return stroke thereof or when the tube moves towards the valve 43. This prevents the solid matter from clinging to the valve at the outlet end of the tube and consequently preventing the necessity of providing scrapers or other means for keeping the valve 43 which isat the outlet of the tube 39 free of the solid matter.

It is to be understood that the form of our invention herewith shown and described is to be taken as the preferred example of the same, and that various changes as to the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention, or the scope of the subjoined claim.

Having thus described our invention, we

claim:

A pump comprising a pair of cylindrical sections, valve supports mounted at the outer ends of the sections, said supports having circular valve ports the centers of which are alined with each other and having valve seat surfaces disposed in planes at acute angles to the axes of the sections, a cylindrical tube mounted for sliding movement and having its end portions received within the sections, the outlet end of the tube having a valve surface which is disposed in a plane at an acute angle to the axis of the tube, the passageway through the adjacent end portion of the tube being diametrically reduced and forming a valve port the center of which is alined with the centers of both of the first mentioned valve ports, the lower inner sur face of said reduced port being alined horizontally with the lower surface of the passageway through the intermediate portion of the tube, and a valve hingedly mounted upon the tube and adapted to close against the valve seat surface. m

In testimony whereof, we have affixed our signatures.

ALBERT H. HILL. EARL H. SLEETH. 

